辅助给水汽动泵入口管道振动分析

Vibration Analysis for Piping Connected with Inlet of Auxiliary Water Feeding Turbine-driven Pump

通过结合现场电站振动测量结果,根据管道走向、支架布置、汽动泵等结构特点,进行振动频谱分析,优化汽动泵入口管道结构及布置,实现泵及管系振动强度的降低。与此同时,尝试通过增加入口膨胀节,改变支架结构与布置等方式,对比分析振动结果,以达到更好的运行状态及改良效果。

Based on the layout of piping and supports and the structural features of turbine-driven pump, and combined with the onsite measuring results in power station, the analysis of vibration frequency spectrum was carried out. With the optimization in the layout and structure of turbine-driven pump inlet piping, the vibration intensity can be reduced. Also, with the methods of adding expansion joint at inlet and changing support structure and its layout, from the comparison of the vibration analysis, it was found better performance of the system can be obtained.